JPH0618230Y2 - In-furnace brick building equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to an improvement of a reactor brick building device used for constructing brick bricks of a metal melting furnace or the like.

2. Description of the Related Art In a metal melting furnace, for example, a steelmaking converter, a liner brick eroded and damaged by molten steel is removed, and a new liner brick is newly constructed.

In order to perform such construction work of the lining brick, various lining brick building devices have been conventionally used.

FIG. 3 shows an example of the structure, which is a tower (2) having a cylindrical frame,
A cage (3) that moves up and down inside the tower (2);
And a working deck (4) that expands and contracts on the outside of (2) and expands and contracts in a telescopic manner. It is driven by a winch (41) through a wire (43) wound around.

In order to perform the work of constructing the inner brick of the converter (1) using such an inner brick building device, the inner brick building device with the work deck (4) contracted is supported by a crane and moved, and After inserting it into the furnace (1) and lowering it, the hanging metal fitting (not shown) provided on the top of the lining brick building device is supported on the cradle, and then the winch (41) is driven to lower the work deck (4). And stop at the height position where the lining brick is used for construction work. Then, the working deck (4) is extended laterally to bring the tip of the deck close to the lining surface of the furnace inner wall, and the conveyor (5) is temporarily installed directly above the furnace port.

After finishing the above work preparation, an operator who has stepped down on the work deck (4) builds the lining with a new brick.

Also, because of the construction work of the bricks lined inside, new bricks prepared on the floor outside the furnace are carried onto the conveyor (5) by the elevator that goes up and down between the floor and the conveyor (5), and the conveyor is further moved. Then transferred into the cage (3) and the winch (3
Operate 1) to lower the cage (3) to the height of the work deck (4), and then clean the new bricks in the cage (3) to the work deck (4).
Take it out.

Problems to be Solved by the Invention Above the metal melting furnace such as the converter, there are various obstacles that interfere with the transportation of the lining brick building device into the furnace. For example, in a converter, there is a huge obstacle such as an exhaust gas dust removing device called an OG device. In the drawing, these obstacles are schematically shown by chain lines above the converter.

Therefore, in order to move the lining brick construction device by supporting it on the crane, insert it into the converter while avoiding the obstacles, and lower it, it is necessary for a skilled crane operator to carefully operate the crane operator over time. is there.

In addition, the drum (42) protruding sideways at the upper part of the lining brick building device collides with an obstacle and is damaged, resulting in the cage (3).
Accidents that make it impossible to move up and down often occur.

Furthermore, when constructing a brick lined in the lower part of the furnace, the new brick is loaded into the furnace by first lifting it from the floor to the furnace opening at the top of the furnace, then inserting it into the furnace and lowering it. In addition to the need for transportation equipment such as a crane and a conveyor, there are problems such as arranging workers for transportation.

The present invention solves the above-mentioned problems, and provides a lining brick building device capable of constructing a lining brick in a safe and reliable manner without providing special transportation equipment.

Means for Solving the Problems In order to achieve the above object, an apparatus for constructing an in-furnace brick of the present invention comprises an upper tower composed of a tubular frame, and an upper tower which can be connected to the upper tower via an upper member. A lower tower mounted on the upper tower, a cage for elevating the inside of the upper tower and the lower tower by an elevator installed on the upper tower, and an upper tower supported on a telescopic column mounted on the carriage by a hydraulic device. And the outside of the lower tower, and the first working deck that is installed to extend and contract horizontally toward the furnace wall, and detachably attached to the required position near the middle of the height of the upper tower, and the furnace. It consists of a combination of a second work deck that is horizontally expandable and retractable toward the wall.

The winch and drum for raising and lowering the work deck, which were provided on the upper part of the conventional equipment, are not required, and the protruding parts from the tower to the side are removed, so the safety of the construction equipment for moving the lining bricks supported by the crane is improved. improves.

When building bricks for the inner wall of the furnace body excluding the furnace top, the tower of the equipment is set up on the truck on the floor through the detached furnace bottom and inserted into the furnace, so new bricks are special. Since it does not require a transportation device and is directly loaded into the cage and lifted into the furnace, the brick transportation time can be shortened and work efficiency can be improved.

The lining bricks at the top of the furnace are constructed on the second work deck by building a scaffold of a height that can be reached by the workers on the lining surface for the construction work.

Therefore, the mounting position of the second work deck, that is, the required position near the middle of the height of the upper tower, is the height position suitable for constructing the lining brick at the top of the furnace and the size of the target furnace. The mounting position changes depending on. And
The second work deck is detachably attached by bolt fastening or the like.

Embodiments The present invention will be described with reference to the drawings.

FIGS. 1 and 2 show the construction work of the inner bricks of the converter using the inner brick building device according to the present invention. FIG. 1 shows the bottom (11) of the converter (1). Fig. 2 shows the case where the inner bricks of the furnace body except the furnace top are removed and opened, and Fig. 2 shows the inner bricks of the furnace top without opening the furnace bottom (11) of the converter (1). It shows a case.

As shown in the drawings, the apparatus for constructing bricks in a furnace of the present invention comprises an upper tower (21) composed of a tubular frame and an upper end member (22).
Can be connected to the upper tower (21) via 1) and is also a cart (8)
Upper tower (21) and lower tower (22) due to lower tower (22) mounted on top and winch (31) installed on upper tower
Of the upper tower (21) and the lower tower (22) supported by the cage (3) that moves up and down on the inside of The first work deck that rises and falls outside and is horizontally expandable and contractable toward the furnace wall.
A combination of (6) and a second working deck (7) that is detachably attached to a required position near the middle height of the upper tower (21) and is horizontally extendable and contractable toward the furnace wall. Consists of.

When constructing the brick lined inside the furnace body excluding the furnace top,
As shown in the figure, a trolley (8) equipped with a lower tower (22) from which an upper end member (221) has been removed in advance and a first working deck (6) supported by a retractable support (61) ),
Remove the bottom (11) and place it directly below the open converter (1),
At the same time, the second working deck (7) was previously removed and the upper tower (221) of the lower tower (22) was connected to the lower end.
(21) is moved by being supported by a crane, inserted into the converter (1), and the lower surface of the upper end member (221) is joined to the lower tower (22) for assembly.

Then, drive the hydraulic system (62) to extend the pillar (61), and reach the height position where the lining brick is built up to the first working deck.
Raise (6) and extend the deck to bring the tip of the deck closer to the lining surface.

When the above preparation is completed, the worker who descends to the first working deck (6) constructs the lining brick with the new brick carried on the deck. In addition, the first working deck (6) is moved up and down to change the height position to cope with the change in the construction position of the lining brick.

For the transportation of new bricks into the furnace, transfer them to the cage (3) that has descended to the bottom of the lower tower (22) by a hawk lift traveling on the floor outside the furnace, and move the cage (3) to the first working deck (6). ) Is raised.

When building lining bricks on the top of the converter (1), attach the second work deck (7) to the required position near the middle height of the upper tower (21) as shown in Fig. 2. And, the upper tower (21) which kept the deck in a contracted state was moved while being supported by a crane, and the furnace bottom (11) was inserted into the converter (1) in a state where it was not opened,
A hook (not shown) is supported and fixed to a cradle, the second work deck (7) is extended, and the tip of the deck is brought close to the lining surface. Then, a scaffold for performing construction work is assembled on the second work deck.

When the above preparation is completed, the worker who descends to the second work deck (7) builds the liner brick with the new brick carried on the deck.

For the transportation of new bricks into the furnace, they are once lifted on the conveyor (5) by the elevator that goes up and down between the floor surface and the conveyor (5), transferred to the cage (3) via the conveyor, and then moved to the cage (3).
Is lowered to the height of the scaffold.

A lining brick building device according to an embodiment of the present invention shown in FIGS. 1 and 2 was produced, and a conventional lining brick building device shown in FIG. 3 having the same function was made. The results shown in Table 1 were obtained.

It can be seen from Table 1 that the device of the present invention is 2 m lower in height than the conventional device, and is compactly constructed by 0.7 m x 1.0 m in the top plane dimension. It can be seen that the number of transport workers can be reduced by 2.

Effect of the Invention The lining brick building apparatus of the present invention does not require a winch and a drum for raising and lowering the work deck, can make the apparatus tower compact, and can prevent damage to the apparatus due to collision during transportation and insertion into the furnace.

In addition, the equipment tower can be divided into an upper tower and a lower tower, and depending on the construction site of the brick lined with the furnace, only the upper tower can be used and the upper tower and the lower tower can be used in a connected state. And the construction cost of the lining brick can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view of a case where a brick of the furnace body is constructed by the in-furnace brick building device of the present invention with the furnace bottom open,
FIG. 2 is an explanatory view of a case where a brick at the top of the furnace is constructed by the apparatus for constructing a brick in the furnace of the present invention with the furnace bottom closed, and FIG.
The figure is an explanatory view showing an example of a conventional furnace brick building device. 1 …… Converter 2 …… Tower 3 …… Cage 4 …… Work deck 5 …… Conveyor 6 …… First work deck 7 …… Second work deck 8 …… Carriage 11 …… Heart bottom 21 …… Top tower 22 …… Lower tower 221 …… Upper member 31 …… Winch 41 …… Winch 42 …… Drum 43 …… Wire 61 …… Post 62 …… Hydraulic system

Claims (1)

[Scope of utility model registration request] 1. An upper tower composed of a tubular frame, a lower tower which is connectable to the upper tower via an upper end member and which is mounted on a trolley, and an upper tower provided by an elevator provided on the upper tower. A cage that moves up and down inside the lower tower, and a pedestal that is mounted on the trolley and is supported by a stretchable column by a hydraulic device to raise and lower the outside of the upper and lower towers and horizontally stretchable toward the furnace wall. A furnace consisting of a combination of a first working deck provided and a second working deck that is detachably attached to a required position near the middle of the height of the upper tower and is horizontally expandable and retractable toward the furnace wall. Lined brick building equipment.